100 Grams Brown Rice in Cups
100 g of brown rice is 0.51 cups (spooned and levelled, King Arthur Baking). The working is simple: 100 divided by 198 g per cup is 0.51, so 100 g of brown rice measures about 1/2 cup. Whole-grain rice with the bran layer intact. All the figures on this page are approximate conversions based on the King Arthur Baking value, so when a recipe really matters, verify with a kitchen scale.
This is a pantry page as much as a conversion page, because the question usually arrives while you are standing in front of an open cupboard, holding a bag of brown rice that is labelled in grams and a recipe that talks in cups, and what you need is a number you can trust without a calculator.
Brown Rice grams to cups conversion table
| Grams | Cups (decimal) | Nearest measure |
|---|---|---|
| 25 g | 0.13 cups | 1/8 cup |
| 50 g | 0.25 cups | 1/4 cup |
| 75 g | 0.38 cups | 3/8 cup |
| 100 g | 0.51 cups | 1/2 cup |
| 125 g | 0.63 cups | 5/8 cup |
| 150 g | 0.76 cups | 3/4 cup |
| 200 g | 1.01 cups | 1 cups |
| 250 g | 1.26 cups | 1 1/4 cups |
| 300 g | 1.52 cups | 1 1/2 cups |
| 400 g | 2.02 cups | 2 cups |
| 500 g | 2.53 cups | 2 1/2 cups |
The decimal column is exact arithmetic from the 198 g per cup figure, while the nearest-measure column is what you would actually reach for in the kitchen. A value like 0.51 cups is not a useful instruction on its own, so the table rounds it to the nearest practical measure, which for 100 g is 1/2 cup. The worked examples below show how to handle the in-between amounts without a calculator, and the reverse table underneath lets you go the other way, from cups back to grams.
Cups to grams for Brown Rice
| Cups | Grams |
|---|---|
| 1/4 cup | 5 g |
| 1/3 cup | 66 g |
| 1/2 cup | 99 g |
| 2/3 cup | 132 g |
| 3/4 cup | 148 g |
| 1 cup | 198 g |
| 1 1/2 cups | 297 g |
| 2 cups | 396 g |
| 3 cups | 594 g |
Read this table the other way round whenever a recipe is written in cups and your scale reads grams. One cup is 198 g, half a cup is 99 g, and a quarter cup is 5 g, all measured spooned and levelled. Because the two tables are calculated from the same 198 g figure, they always agree with each other, which is the point of using one source for the whole page rather than mixing figures from different charts.
Worked examples
One 100 g bag, one recipe
The recipe asks for 0.51 cups of brown rice and the bag holds exactly 100 g, so the whole bag is the recipe amount, which is 1/2 cup. Tip the bag into the bowl through a cup if you want to check, but the scale has already told you the answer, and the bag label is the most reliable number in the kitchen. If the recipe asks for a little less, weigh the shortfall out and keep the rest for another day.
A 300 g bag split across two recipes
300 g of brown rice is 1.52 cups, which splits neatly into three lots of 100 g, or three lots of 0.51 cups. Weigh the three lots rather than dividing by eye, because an uneven split gives one recipe too much and the other too little, and the difference shows up in the finished dish. Label each lot with its weight as you go, so the second recipe is ready to use without another round of measuring.
Checking what is left in an open bag
An open bag with 150 g left holds 0.76 cups of brown rice, or about 3/4 cup. Compare that figure with what your recipe asks for, and the only way to know whether you have enough is to weigh the remainder. A quick weigh before you start saves the mid-recipe discovery that the bag is short, which is the most annoying moment in any kitchen.
How the weight was measured
Spooned and levelled means spooning the ingredient into the measuring cup until it is heaped, then sweeping a straight knife across the top to level it off, unless the ingredient is a liquid, in which case it is poured to the line. Never scoop the cup through the bag or jar, and never tap the cup down, because both pack the ingredient and add weight.
The source for the 198 g per cup figure is King Arthur Baking, and the confidence in the value is high where the source is a published ingredient chart and medium where it is a USDA food-data value. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup. Use the table above, which follows the same source, and your conversions will be consistent with the recipes on this site.
Buying, storing and using up Brown Rice
Buy brown rice by weight and store it by the guidance below, because the printed weight is exact and the volume it occupies in the bag changes every time the bag is moved. Airtight container, cool and dry, up to 6 months. That storage advice matters for the conversion too, since an ingredient that has absorbed moisture weighs more per cup than a dry one, and a bag left open in a humid kitchen will slowly drift away from the published figure. When you open a new bag, weigh out 100 g once and see what it looks like in your own cups, because that single check calibrates your eye for every later measurement. If you are using up the last of a bag, weigh what is left before you start the recipe, so you know whether you have the full 100 g or need a trip to the shop, rather than discovering halfway through mixing that you are short.
Common mistakes with brown rice
The pantry mistake is assuming a bag is a cup measure: a 100 g bag of brown rice is 0.51 cups, not one cup, and a 500 g bag is 2.53 cups, so counting bags instead of weighing them is how a recipe ends up short. A second mistake is measuring straight from a bag that has settled in transit, because the contents at the bottom are packed tighter than the contents at the top, and the first cup from a new bag weighs less than the last cup from the same bag. Stir or shake a dry ingredient before measuring, spoon it lightly, and level it. A third mistake is storing brown rice badly and then blaming the conversion when the result changes, when the real cause was moisture, staleness or clumping that changed the density.
Storing brown rice
Airtight container, cool and dry, up to 6 months. Pilaf, bowls, stir-fries and side dishes. Keeping brown rice in good condition protects the conversion as well as the flavour, because a stale, damp or clumped ingredient does not weigh the same per cup as a fresh one, and the table above assumes the ingredient is in its normal, dry, free-flowing state. If a bag has been open for months, check it before you measure, and replace it if it smells off, feels damp or has changed colour.
Frequently asked questions
Is the figure on this page exact or approximate?
Approximate. All density conversions are approximate, because the weight of a cup varies with measuring method, moisture, brand and how finely the ingredient is ground or chopped. The figure is accurate enough for everyday cooking and for most baking, and when it has to be exact, verify it with a kitchen scale.
Is 100 g of brown rice exactly 0.51 cups?
To two decimal places, yes: 100 divided by 198 is 0.51, and that is the figure the table uses. It is still an approximate conversion, because the true weight of a cup depends on how it is measured, so treat 0.51 cups as the working answer and weigh the ingredient with a kitchen scale when the recipe really matters.
How do I measure 100 g of brown rice without a scale?
Spoon brown rice into a measuring cup spooned and levelled style until it is heaped, then level it with a straight knife. That gives you about 1/2 cup per 100 g. Do not scoop the cup through the bag, because scooping packs the ingredient and adds weight, and do not use a mug, because mugs are not standard cups.
How many tablespoons is 100 g of brown rice?
One tablespoon is one sixteenth of a cup, so one tablespoon of brown rice weighs about 12.4 g, and 100 g is about 8.1 tablespoons. Tablespoons are a steadier measure than cups for small amounts, so if your recipe needs less than half a cup, count tablespoons instead.
How many grams is 1 cup of brown rice?
One US cup of brown rice, measured spooned and levelled, weighs 198 g according to King Arthur Baking. That is the figure every number on this page is calculated from, so one cup is 198 g, half a cup is 99 g, and a quarter cup is 5 g.